What year? Likely not needed. Any perceived reason for upgrading the coils?
I've seen the coil on plug modification somewhere and did a search. Found this - BETA 1 and 2 Coil on Plug Mod - Hyundai AftermarketI'm currently researching changing the wasted spark to a coil over plug on my son's 2003 Tiberon GT with a 2.7 Delta block. I have been look at the systems from holly and Fuel tech